Author: Tanya Deborah
Date: 00:40:35 02/18/01
Go up one level in this thread
On February 18, 2001 at 03:03:43, Jeremiah Penery wrote:
>On February 18, 2001 at 01:22:38, Tanya Deborah wrote:
>
>>
>>
>>
>>Hi to all,
>>
>>This is a beautiful game by the Great Master Leonid Stein.
>>I am interested to know, How many programs can avoid the fatal mistake 21.Qxh1?
>>
>>Deep Fritz can avoid that!!!, Deep Fritz can see that Qxb3 is better than Qxh1.
>> Junior6 and Hiarcs7.32 and Fritz6 can´t avoid that...
>>
>>The position is very interesting, in this kind of position you can see some
>>computer weak points, (the machines sometimes have so much appetite, and can´t
>>see the great atack by White after move 21.
>>
>>Another question? Which program can find 12.Qb3! ???? (with a winning endgame)
>>- because after change Queens, White is much better. I think there are no
>>program that can find this move.
>>
>>Please look this game, and post your results here.
>>
>>I will like to know what think Gambit Tiger, Rebel, Shredder, Crafty, Gandalf
>>and other strong programs.
>>
>>
>>
>>[Event "Moscu, 1966 -Spartakiada"]
>>[Date "1966.02.17"]
>>[Round "?"]
>>[White "Stein, Leonid"]
>>[Black "Birbrager Isaak"]
>>[Result "1-0"]
>>[ECO "B10"]
>>[PlyCount "43"]
>>[EventDate "2001.02.17"]
>>
>>1. e4 c6 2. d3 d5 3. Nd2 dxe4 4. dxe4 Nf6 5. Ngf3 Bg4 6. h3 Bh5 7. e5 Nd5 8. e6
>>f6 9. g4 Bg6 10. Nd4 Nc7 11. c3 Qd5 12. Qb3 12... Qxh1 $4 {A big mistake!,
>>Black should have change Queens. (Dxb3). Now with this Rook sacrifice, White
>>is winning! -(Stein.)}
>
>This is what I get from modified Crafty 18.1 with SE:
>
> 8-> 33.34 -1.17 12. ... Qxh1 13. Qxb7 Kd8 14. f3 Qh2
> 15. Kd1 Be8 16. Nf5 g6 17. Nh4 <HT>
> 9 1:42 -- 12. ... Qxh1
> 9 1:55 -0.96 12. ... Qxh1 13. Qxb7 Kd8 14. Nb5 Nxb5
> 15. Qxa8 Kc8 16. a4 Nc7 17. Qxa7 Nxe6
> 18. Nc4 Nd7 19. f4 Bd3 20. Qa8+ Kc7
> 21. Qa7+ Kd8 22. Qf2 <HT>
> 9-> 1:59 -0.96 12. ... Qxh1 13. Qxb7 Kd8 14. Nb5 Nxb5
> 15. Qxa8 Kc8 16. a4 Nc7 17. Qxa7 Nxe6
> 18. Nc4 Nd7 19. f4 Bd3 20. Qa8+ Kc7
> 21. Qa7+ Kd8 22. Qf2 <HT>
> 10 2:34 -- 12. ... Qxh1
> 10 3:03 -0.68 12. ... Qxh1 13. Qxb7 Kd8 14. Nb5 Nxb5
> 15. Qxa8 Kc8 16. a4 Nc7 17. Qxa7 Bd3
> 18. Qe3 Bxf1 19. Nxf1 Qd5 20. Ra3 Nxe6
> 21. Qa7 Ng5 <HT>
> 10-> 3:13 -0.68 12. ... Qxh1 13. Qxb7 Kd8 14. Nb5 Nxb5
> 15. Qxa8 Kc8 16. a4 Nc7 17. Qxa7 Bd3
> 18. Qe3 Bxf1 19. Nxf1 Qd5 20. Ra3 Nxe6
> 21. Qa7 Ng5 <HT>
> 11 4:51 -- 12. ... Qxh1
> 11 6:04 0.00 12. ... Qxh1 13. Qxb7 Kd8 14. N2f3
> Bd3 15. Bf4 Qxf1+ 16. Kd2 Qxf2+ 17.
> Kxd3 Nba6 18. Qxc6 Kc8 19. Qd7+ Kb7
> 20. Qc6+ Kb8 21. Qe8+ Kb7 22. Qc6+
> <HT>
> 11-> 6:50 0.00 12. ... Qxh1 13. Qxb7 Kd8 14. N2f3
> Bd3 15. Bf4 Qxf1+ 16. Kd2 Qxf2+ 17.
> Kxd3 Nba6 18. Qxc6 Kc8 19. Qd7+ Kb7
> 20. Qc6+ Kb8 21. Qe8+ Kb7 22. Qc6+
> <HT>
>
>In other words, it sees only a draw.
>
>> 13. Qxb7 13... Kd8 {
>>A very dramatic and obligatory King move! - Black position is hopeless!} 14.
>>N2f3 Bd3 15. Bf4 $1 {A very fine move!} 15... Qxf1+ 16. Kd2 Qxf2+ 17. Kxd3 {
>>Black is lost
>
>The line of Crafty agreed with the analysis until here. I think white can only
>get a draw after Nba6 instead of Nxe6 in this position.
>[D]rn1k1b1r/pQn1p1pp/2p1Pp2/8/3N1BP1/2PK1N1P/PP3q2/R7 b - -
>
>After Nxe6 is played, Crafty sees the mate instantly:
>
>4-> 0.37 1.49 17. ... Nxe6 18. Nxe6+ Ke8 19. Nfd4
> Kf7 20. Qxa8 Qxb2 21. Bxb8 <HT>
>5 0.46 -- 17. ... Nxe6
>5 0.69 Mat05 17. ... Nxe6 18. Nxe6+ Ke8 19. Qc8+
> Kf7 20. Neg5+ fxg5 21. Nxg5+ Kf6 22.
> Qe6# <HT>
>
>What is the relevant line after 17. ...Nba6 for White to win?
>
After Nba6 DEEP FRITZ see that White can win easy with :
18. Bxc7+ Nxc7 19. Rd1 c5 20. Nb5 Nxe6 21. Qxa8+ Kd7 22. Kc4+ Nd4 23. Nbxd4 cxd4
24. Nxd4 e5 25. Qxc6+ Ke7 26. Qe6+ Kd8 27. Nc6+ Kc7 28. Rd7+ Kb6 29. Nd4+ Ad6
30. Qxd6 Ka5 31. Rxa7 MATE!! (DEEP FRITZ)
} 17... Nxe6 18. Nxe6+ Ke8 19. Qc8+ Kf7 20. Nfg5+ fxg5 21. Nxg5+
>>Kf6 22. Qe6# {A beautiful mate !!} 1-0
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